What I wear while biking
You can bike with almost any clothing, but I don't want any weather conditions11 Which are very moderate in California. to hinder my biking.
Most of the year, my area's climate permits biking in normal, casual attire. These items are what I wear on and apply to my body when biking during temperate times of year, as a kind of baseline:
Long-sleeved, lightweight shirts with UV protection
This replaces sunscreen on my arms, which is usually annoying to apply, and is just as comfortable as a short-sleeved shirt.
Lightweight pants or shorts cut right above the knee
I generally wear shorts above 80ºF but then need to apply sunscreen to my lower legs for rides longer than an hour.
These are lightweight enough to be breathable but also pretty durable, though my pedal's pins do chew up the soles a little.
Outdoor Research ActiveIce Chroma Full Sun Gloves
These are light enough to stay cool and, like long-sleeved shirts, mean I don't need to apply sunscreen to my hands.
Walz cycling cap
My helmet doesn't have a visor, so this keeps any low sun angles out of my eyes.
Thinksport sunscreen applied to my face, neck, ears, and legs if wearing shorts
Sunlite Chromed Steel leg band on right ankle when wearing pants
I'm not sure where I got this, but I couldn't find a link directly to the manufacturer's website.
TriEye sunglasses in photochromic or tinted
These replace my usual sunglasses, clear safety glasses, and helmet mirror
Darkness
This gear comes into play when I'm biking in the dark, usually half the year between September and March.
I tried using a ProViz REFLECT360 Plus Cycling Jacket, but it is almost comical how little it breathes: it was like wrapping myself in a plastic bag. This mesh vest will hopefully be reflective enough (aside from the arms when signaling) and still let me get home without feeling too cold from sweat that can't escape.
Amphipod Xinglet Optic Beam vest
This is very bright, but I don't have a good sense for its battery life.
I'd still like to get a lightweight helmet-mounted light and find a way to highlight where my hands are for signaling.
Cold weather
When the temperature dips below 60ºF, I tend to add layers or swap out clothing items for these:
Ornot Gray Ties DND glove (discontinued but essentially a custom version of the Giro DND glove)
I wear these between 45ºF and 60ºF.
Ski gloves
These can handle anything below 45ºF, but are a bit bulky so I'm considering swapping them out for pogies.
This works pretty well as a windbreaker down to around 45ºF for me.
This replaces my normal cap and is almost always warm enough when it's covering my ears.
Warmer shoes
I have some wool-upper shoes that I wear below 50ºF.
UV neck warmer
I can't find a good link for this, but I generally only wear this over my nose and mouth when starting rides in the cold, as my sunglasses fog up whenever I have to stop.
Wet weather
I use fenders and a belt drive bike in the rain to avoid re-waxing my chain. To keep me dry, I add these to my gear, which will need a dozen liters of storage on the way back if the weather changes:
Cleverhood rain cape
This was a game changer when I started using it, but it seems like Cleverhood no longer stocks the model I use, with its reflective striping.
Shower's Pass Timberline rain pants
The rain cape doesn't reach below my knee, so I still need these to keep my clothes dry down there.
These don't breath at all, but are completely waterproof without PFOA/PFOS DWR
Warm weather
I try not to bike when it gets above 90ºF so I don't have great gear for hot temperatures. My main piece of advice is to stop and drink water often, in the shade, ideally from insulated bottles so it's cool. Also, breathing through your mouth can help run air along the roof of your mouth, kind of like a dog panting, which has helped me cool down when it's hot.
Ventilated shoes
These are about the only changes I make to my attire for warm weather, swapping out my usual Sanuks for lightweight, ventilated shoes.
Fitness-only
When I'm just biking for fitness and trying to go as fast and far as I can, I'll switch over to the usual cyclist-oriented clothing. I used to not own any of these and just ride with shorts and a light, long-sleeve shirt, which was fine, too. I'm not sure these add much on normal rides or climbs, but they do help with really long rides.
Rapha Core Bib Shorts, Eliel Laguna Seca Endurance Bib Short 11", or Ornot Work Bib Short
The padding is definitely noticeable on rides over 30 miles for me. These all seem fine, but I want to try full-length lightweight bib pants too to avoid needing to put sunscreen on my legs for long rides.
I haven't needed to use these yet, since my interest in biking when it's cold drops considerably, but hopefully these help make it comfortable.
Rapha Trail Long Sleeve T-shirt
This is not too different from normal long-sleeved shirts, but kind of matches the rest of the gear here.